<![CDATA[CBMSTUFF FORUM - DE-10 Multi Expansion Board]]>

<![CDATA[CBMSTUFF FORUM - DE-10 Multi Expansion Board]]> https://www.cbmstuff.com/forum/ Mon, 18 May 2026 08:21:16 +0000 MyBB <![CDATA[User Port for Blisster v2]]> https://www.cbmstuff.com/forum/showthread.php?tid=845 Sat, 07 Aug 2021 15:13:12 -0400 kaliwraith]]> https://www.cbmstuff.com/forum/showthread.php?tid=845
Today I began looking at the documentation to get everything set up, and the Blisster board requires connecting its "Serial Out" (USB 3.0 Micro-B) to the IO board's User Port using a USB 3.0 cable.

Unfortunately, the CBM Stuff DE-10 Multi Expansion Board doesn't have a USB 3.0 user port configured. It does have a header labeled "USER PORT", however.

The pins for this port are labeled on the board as follows:

1. Tx
2. Rx
3. 3.3v
4. Gnd
5. RTS
6. CTS
7. DTR
8. DSR

I am in the process of figuring out which pins connect to the USB 3.0 pins, which are enumerated as follows:

1. VBUS
2. D-
3. D+
4. GND
5. RX-
6. RX+
7. GND_DRAIN
8. TX-
9. TX+

The Blisster docs show a diagram showing the RX, TX, RTS, CTS, DTR, and DSR lines connected to the USB 3.0 connector, but the diagram labeling is incomplete. Specifically, it's unclear which pin CTS connects to, as well as VCC, GND, and VDD.

The diagram is shown below:
[Image: user-port.png]

Looking at the official IO board schematic tells more of the story:

[Image: 5JCXKki.png]

So far my best understanding is:
From User Port:

USER -> USB_3
1. Tx    ->   D- (P2)
2. Rx    ->   D+ (P3)
3. 3.3V -> TX+ (P9) (??? or NC ???)
4. Gnd ->   Gnd (P4)
5. RTS ->   TX- (P8)
6. CTS ->   Gnd2 (P7)
7. DTR -> RX+ (P6)
8. DSR -> RX- (P5)

From USB_3:

USB_3 -> USER
1. Vbus -> (NC)
2. D- -> Tx (P1)
3. D+    -> Rx (P2)
4. G1    -> G (P4)
5. RX- -> DSR (P8)
6. RX+ -> DTR (P7)
7. G2    -> CTS (P6)
8. TX-   -> RTS (P5)
9. TX+ -> 3.3V (P3) (??? or NC ???)

I would appreciate feedback on whether I've made any mistakes here. Questions that are immediately obvious:

1. Should I connect Tx+ to 3.3V or leave it NC?
2. Do I also need to connect Vbus to 5V or leave it NC?]]>
Today I began looking at the documentation to get everything set up, and the Blisster board requires connecting its "Serial Out" (USB 3.0 Micro-B) to the IO board's User Port using a USB 3.0 cable.

Unfortunately, the CBM Stuff DE-10 Multi Expansion Board doesn't have a USB 3.0 user port configured. It does have a header labeled "USER PORT", however.

The pins for this port are labeled on the board as follows:

1. Tx
2. Rx
3. 3.3v
4. Gnd
5. RTS
6. CTS
7. DTR
8. DSR

I am in the process of figuring out which pins connect to the USB 3.0 pins, which are enumerated as follows:

1. VBUS
2. D-
3. D+
4. GND
5. RX-
6. RX+
7. GND_DRAIN
8. TX-
9. TX+

The Blisster docs show a diagram showing the RX, TX, RTS, CTS, DTR, and DSR lines connected to the USB 3.0 connector, but the diagram labeling is incomplete. Specifically, it's unclear which pin CTS connects to, as well as VCC, GND, and VDD.

The diagram is shown below:
[Image: user-port.png]

Looking at the official IO board schematic tells more of the story:

[Image: 5JCXKki.png]

If you're interested, you can find it here:

https://corei64.com/shop/index.php?route...uct_id=248

Thomas]]>

If you're interested, you can find it here:

https://corei64.com/shop/index.php?route...uct_id=248

Thomas]]> <![CDATA[DE-10 Multi Expansion Board Pictures]]> https://www.cbmstuff.com/forum/showthread.php?tid=656 Fri, 27 Sep 2019 22:14:22 -0400 admin]]> https://www.cbmstuff.com/forum/showthread.php?tid=656
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